Michael J. Lewis (born March 18, 1946) is an American former professional basketball player.
A 6'8" power forward/center from Duke University, Lewis played in the American Basketball Association from 1968 to 1974 as a member of the Indiana Pacers, Minnesota Pipers, Pittsburgh Pipers, Pittsburgh Condors, and Carolina Cougars. He averaged 12.1 points per game and 11.9 rebounds per game for his career and made two ABA All-Star Game appearances, in 1970 and 1971.